Open angle glaucoma is mainly examined when the atrial angle is open, the cup-to-disc ratio is altered, the visual field is lacking, and vision is reduced. Glaucoma can be categorized into primary glaucoma, secondary conditions, congenital conditions, mixed conditions, there are special types of cases, primary conditions, can also be divided into open-angle glaucoma and closed-angle glaucoma. Open angle glaucoma, generally the atrial angle is open, easy to cause aqueous humor outflow obstruction is mainly due to, a variety of lesions caused by aqueous humor outflow obstruction, intraocular pressure is mostly normal, resulting in visual impairment and visual field defects can not be ignored. The treatment of glaucoma is generally symptomatic treatment, can only get better but not cured. Glaucoma eye lesions are mainly visual impairment and visual field defects, which must be given high priority to avoid causing visual impairment.